Fast characterization of hybrid near-field coupling effects of multi-PCBs in rectangular cavities with FFT-accelerated integral-equation method

This paper analyzes the frequency-domain EMC/EMI problems including complicated transmission lines and printed circuit boards (PCBs) that reside in metallic rectangular cavities, by using an efficient iterative Fast Fourier Transform (FFT)-accelerated integral-equation method. The internal field distribution and near-field coupling/interference of multiple transmission-lines and PCBs in cavities can be extensively investigated with this method, which further enables the optimization of EMC/EMI design to effectively suppress near-field coupling effects for complicated multi-PCBs and transmission lines.